package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;


@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealMapper setmealMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;

    @Autowired
    private DishMapper dishMapper;

    @Override
    @Transactional
    public void save(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);

        setmealMapper.insert(setmeal);

        Long setmealId = setmeal.getId();
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> {
            setmealDish.setSetmealId(setmealId);
        });
        setmealDishMapper.insertBatch(setmealDishes);


    }

    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    @Override
    @Transactional
    public void delete(List<Long> ids) {
        for (Long id : ids) {
            Setmeal setmeal = setmealMapper.getById(id);
            if (setmeal.getStatus() == StatusConstant.ENABLE) {
                // 起售中不可删除
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }
            setmealMapper.delete(ids);
            setmealDishMapper.deleteBatch(ids);

    }

    @Override
    public SetmealVO getById(Long id) {
        Setmeal byId = setmealMapper.getById(id);
        SetmealVO setmealVO = new SetmealVO();
        BeanUtils.copyProperties(byId, setmealVO);
        List<SetmealDish> byDishId = setmealDishMapper.getBySetmealId(id);
        setmealVO.setSetmealDishes(byDishId);
        return setmealVO;
    }

    @Override
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.update(setmeal);
        Long setmealId = setmeal.getId();
        setmealDishMapper.deleteById(setmealId);
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(
                setmealDish -> {
                    setmealDish.setSetmealId(setmealId);
                }
        );
        setmealDishMapper.insertBatch(setmealDishes);


    }

    @Override
    public void state(Long id) {
        Setmeal byId = setmealMapper.getById(id);
        if (byId.getStatus() == StatusConstant.ENABLE) {
            byId.setStatus(StatusConstant.DISABLE);
        }else{
            byId.setStatus(StatusConstant.ENABLE);
        }
        setmealMapper.update(byId);
    }

    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    @Override
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}
